a Data for 2000 include
inland water, coastal water, Great Lakes, and territorial water. The Census
Bureau tabulates area data for the decennial census years only. b Data in 2005 chained
dollars (see Glossary for definition). c BTS computations, November
2009. d Life expectancy for
2000-2006 were calculated using a revised methodology and may differ from
previously published data.

Sources: AreaU.S. Department of Commerce (USDOC), U.S. Census Bureau, Statistical Abstract of the United States: 2002 and 2009, available at www.census.gov as of November 2009. GDPUSDOC, Bureau of
Economic Analysis, available at www.bea.gov as of November 2009. Population, number of households, and median household
incomeUSDOC, Census Bureau, available at
www.census.gov as of November 2009. Average
household income and expenditures, and labor forceU.S. Department of Labor, Bureau of Labor Statistics,
available at www.bls.gov as of October 2009. Life
expectancyCenters for Disease Control and
Prevention, available at www.cdc.gov as of September 2009.